Thread: Td5-no cruise control after transfer case replacement?

Is the speed sensor not located on the transfer case? I have heard of the cruise not working with taller gearing conversions. I would guess the engine rpm and road speed don't match what the ecu thinks is possible. I wonder if there is some kind of setting that can be changed (defender/discovery) in the ecu perhaps with a nanocom? (been a while since I owned a Defer and I don't have the nanocom anymore)

Cheers,
Fraser

Originally Posted by fraser130

Is the speed sensor not located on the transfer case?
Cheers,
Fraser

D2 takes speed data from the ABS, there is no sensor on the transfer case. Maybe the system is upset because engine revs to road speed data is incorrect.

Forgot to say that i have manual gearbox,so no input signals (as per auto) from gearbox to ecu,only one signal from slabs ecu to engine ecu where a calibration device like truespeed can be connected.
So where is the "glitch"?

Originally Posted by fatman

Forgot to say that i have manual gearbox,so no input signals (as per auto) from gearbox to ecu,only one signal from slabs ecu to engine ecu where a calibration device like truespeed can be connected.
So where is the "glitch"?

Clutch switch?

I haven't touched anything else,i installed the transfer case by my own (at my parking with a big trolley jack!).
I 'll plug a friend's nanocom to check the switches (clutch,cruise control set+,reset etc) sometimes the slabs-bcu settings get upset with no obvious reason!
Thanks.

Fatman, there was a thread a couple of years ago where someone had fitted an "overdrive" type transfer case and had the same problem, perhaps if you could find that and PM the person? Maybe they could help? It is strange though, because the cruise works fine in Defenders and Discos......must be a setting somwhere - maybe have a "dig around" with the Nanocom.....

Originally Posted by BigJon

D2 takes speed data from the ABS, there is no sensor on the transfer case. Maybe the system is upset because engine revs to road speed data is incorrect.

Definitely the case and HDC is also affected for the same reason - the ECM cannot work out which gear is being used.

So i have to correct the speed signal - and i guess it has to be done prior the slabs ecu(as per slunnie's alternative conection description).
After the transfer case swap,the revs with 33's became close to revs with stock transfer case and 29's,so the missing link is the (corrected)speed info the td5 ecu has to get.